Crews are taking advantage of the full highway closure to tackle other critical work that can only happen while the road is closed.

Feb. 2 - 3 closure detailsCrews will close both directions of SR 520 and all connected ramps between Montlake Boulevard in Seattle and Interstate 405 in Bellevue from 11 p.m. Friday, Feb. 1, to 5 a.m. Sunday, Feb. 3. Drivers will need to take I-90 or find alternate routes around Lake Washington. SR 520 will remain open between I-5 and Montlake Boulevard and east of I-405.

During previous SR 520 closures, the longest delays on I-90 occurred in the afternoon. To help keep traffic moving, WSDOT is adjusting the reversible I-90 express lanes schedule.

• Saturday, Feb. 2: I-90 express lanes will be open to westbound traffic from 7 a.m. to 2 p.m. Express lanes will open to eastbound traffic by 3 p.m.

Night work is planned, so residents near the work zone might hear construction noise.

SR 520 Eastside project overviewCrews working on the Eastside Transit and HOV Project are widening SR 520 to six lanes between Medina and Bellevue, rebuilding interchanges, constructing highway lids and transit stops in the center of the highway and installing fish-friendly culverts. In 2010, WSDOT awarded a $306 million design-build contract to Eastside Corridor Constructors, a joint venture of Granite Construction Company and PCL Construction Services. The completed Medina-to-Bellevue corridor is scheduled to open to traffic in December 2013.